ABSTRACT
Objective To study the protective effects of propofol pretreatment on ischemia-reperfusion injury in rabbit heart. Methods Forty New Zealand white rabbits (40 male, weighting 2. 5 ± 0. 36kg) were randomly assigned to 4 groups, including sham operation group, ischemia reperfusion (IR)group, IR + ischemia preconditioning (IP) group and IR + Propofol preconditioning (PP) group (n =10 each). The myocardial ischemia-reperfusion model of rabbits was established by coronary artery ligation.The levels of high energy phosphates (ATP, ADP and AMP) in myocardial tissue were measured by HPLC.The activities of serum lactate dehydrogenase (LDH), serum creatine kinase-MB (CK-MB) superoxide dismutase (SOD) and malondiadehyd (MDA) in myocardial tissue were assayed. Results The content of ATP, ADP, AMP, and the activity of SOD in PP group and IP group were higher than that of IR group, and the content of LDH, MDA and CK-MB in injured myocardial tissue in PP group and IP group were obviously lower than that of IR group (P ＜0. 05, P ＜0. 01). No difference was found in PP group and IP group(P＞0. 05). Conclusion Propofol preconditioning as well as ischemia preconditioning protected the myocardial tissues from the ischemia-reperfusion injury by improving the myocardial energy metabolism, the debasement of the oxyradical level and the antagonism the reaction of lipid peroxides.
ABSTRACT
Objective To study the protective effects of propofol against ischemia/reperfusion injury in rat lung. Methods Rat model of pulmonary ischemia/reperfusion injury was used in this study. Rats were randomly divided into three groups, including sham opera-tion group (group A), iachemia/reperfusion group (group B) and propofol group (group C), 15 rats in each group. The concentration of tumor necrosis factor -α and interleukin-6 in bronchoalveolar lavage fluid (BALF) were measured by enzyme linked immunosorbent assay (ELISA). Then blood gas analysis, lung wet/dry (W/D) weight ratio were detected in each group. Results Propofol could significantly improve PaO2, reduce the W/D value and the contents of TNF-α and IL-6 in BALF. Conclusion Propofol effectively suppressed the pro-duction and release of inflammatory cytokine, therefore it can protect the lung from isehemia/reperfusion injury.